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Martijn Visser closed FLINK-27841. ---------------------------------- Resolution: Information Provided [~Feifan Wang] Thanks for opening the ticket. As you can see in FLINK-19710 and the relevant mailing list discussion https://lists.apache.org/thread/v9w4dm6wdqgn5b6jqjdrzfycxsdh38vj this was a deliberate decision. Hopefully this answers your question. > RocksDB cache miss increase in 1.15 > ----------------------------------- > > Key: FLINK-27841 > URL: https://issues.apache.org/jira/browse/FLINK-27841 > Project: Flink > Issue Type: Improvement > Components: Runtime / State Backends > Affects Versions: 1.15.0 > Reporter: Feifan Wang > Priority: Major > Attachments: image-2022-05-31-00-21-49-338.png, > image-2022-05-31-00-22-45-123.png > > > I run same job with 1.12.2 and 1.15.0 , find that cpu busy much higher than > 1.12. After careful comparison, I find higher cache miss in 1.15. But block > cache size is same. Is this as expected ? > I know RocksDB version in 1.15 is 6.20.3 and 1.12 is 5.17.2, is this just > caused by different versions of RocksDB ? > !image-2022-05-31-00-21-49-338.png|width=599,height=146! > !image-2022-05-31-00-22-45-123.png|width=594,height=175! > test information: > job type : regular join > per record size : 1000 bytes > parallelism : 160 > TaskManager memory : 32G > num of TaskManager : 10 -- This message was sent by Atlassian Jira (v8.20.7#820007)